I installed a 1TB SSD HB 2.5" and it worked like a charm. Then I installed the 16 GB RAM upgrade and nothing. No beeps, no chime, just a black screen and the fan might be running, hard to tell.
"Double check to make sure that your new RAM is the correct speed for your computer. Your Mac uses PC3-8500 RAM. You may have bought faster, newer RAM, such as PC3-12800. This RAM is technically backwards compatible with your computer, but it forces the bus to run at the faster speed, which it can't do. I'm having trouble finding the Apple support article about this, but it works like this: The bus can only run at the 1067 MHz speed of the RAM it was designed for. The computer will only run at the speed of the slowest RAM module installed. If you have PC3-8500 RAM in both slots, that's great, that's what the computer was designed for. But if you put PC3-12800 RAM in both of the slots, the bus will try to run at the speed of that faster RAM, which it can't do. With one slow RAM module in one slot, and one fast one in the other slot, the bus will run at the speed of the slower one, which it's supposed to, and then slow down the faster RAM so that it can also work (this is currently how I'm running my 2009 white MacBook).
Pretty sure it should give off some warnings though, so it's weird that it's not."
"RAM from the ifixit upgrade kit has the following label:
8GB, DDR3, PC3-8500, 1066MHz, 200 PIN
The computer is running better and faster with 10 GB, but since I bought the kit (ifixit didn't have individual 8 GB RAM in stock) I doubt they will let me return just one of them if I can't get them both to work together."
"Hello! My MacBook Pro mid 2010, in system information, perfectly recognizes both the two modules of 8 GB of DDR HynniX-1066 RAM. Apparently, so far, the Mac has worked stably and very well with both High Sierra 10.3.6, but also with Mojave (using Mojave Patcher) and now works ""apparently"" well with MacOS 10.15 Catalina (with Catalina Patcher ).
But .. I HAVE DISCOVERED AN HIDDEN ISSUE. If I test the RAM using TechTool Pro or Rember (https://www.kelleycomputing.net/support/...) or using memtest (included in Rember) I get the same results as this forum: https: // discussions.apple.com/thread/4906714.
So! Is it worth using 16GB in an old MacBook? ... I don't know ... Maybe for those who use this for fun or to surf the Internet. Certainly it is not a good thing to use it for work, knowing that RAM is not read well and that the Data could be corrupted.
UPDATE 20/01/2020 - SOLVED!
After many tests I realized that the problem was caused only by a corrupt RAM bank.
So! You can ignore my previous post of October 18 2019.
The 2010 MacBook Pro, therefore, supports very well up to 16 GB of RAM provided (very important!) if you have installed the latest version of the Firmware.
I solved perfectly with 16 GB of RAM purchased from Amazon. Exactly search with Google: Timetec Hynix IC Apple 16GB Kit (2x8GB) DDR3 PC3-8500 1066MHz memory upgrade for iMac 20 inch /21.5 inch / 24 inch / 27 inch, MacBook Pro 13 inch / 15 inc
It also exists only from 8GB. Excuse me, but if I insert you the Amazons’s Link it could happen that the I-Fixit robot blocks my message.
This RAM is perfect! Now, if I test the RAM using TechTool Pro or Rember (from kelleycomputing.net site) or using memtest (included in Rember) the Test gives me a fast Clock (all 2-2-2-2 !!!!!!) like the best RAM used by Apple.
Of course, you can also buy the good RAM sold by i-Fixit :-)
Macbook Pro 7,1 (13” mid 2010), 2.4 GHz Intel Core 2 Duo, Serial Number 340244X0A**, running OS 10.13.6, so I PRESUME that the firmware has been updated.
